That's not really the way things are done in Unix.
There is an old tenet in Unix programming which says, if you have nothing to say don't say anything, in other words if there is no reason for output from your program don't have any. So taking that into account you should not have any debugging output.
That said you could make sure you have the correct information by making sure the outut of the "correct" printf has a well defined format, by prefixing it with something, like this.
I have an application on Informix 4GL, and I am invoking the shell script from the program, but I need to know if the shell script work fine or not, in order to continue the process.
I know that we can use $? to get the final status but this is on unix command. How can I return a value from the... (3 Replies)
Hi,
I trying to find the solution for writing the programming in unix by shell programming for sorting thr string in alphabetical order.
I getting diffculty in that ,, so i want to find out the solution for that
Please do needful
Thanks
Bhagyesh (1 Reply)
Hi,
I'm having a requirement where I need to call a C program from a shell script and return the value from the C program to shell script.
I refered a thread in this forum. But using that command in the code, it is throwing an error
clear_text_password=$(get_password)
Error: bash:... (24 Replies)
Can anybody pls look into this script and tell me where I went wrong. After running this script, it is showing like "Trying to overlay current working directory ABORT!!!"
:-(
ARGCNT=$#
if
then
echo "Two parameters are needed for this shell "
echo "Please try again with... (1 Reply)
Hi Folks,
The subject is my question:
Can we pass an array of strings from a Perl Program to a Shell Script?
Please provide some sample code.
Thanks
---------- Post updated at 11:52 PM ---------- Previous update was at 11:43 PM ----------
I got it.
Its here:... (0 Replies)
Found myself stuck on this seemingly trivial issue. I have this script which call other shell files to do their deeds. The shell files in turn call some other programs as well. My problem is that in two of these shell files, the control doesnt return to next command in script unless the Enter key... (2 Replies)
Hi All,
well , i am facing this problem.. i have tried a few sample codes but there isn't any solution . could anyone please give a sample code as of how to do this...
Please see the below details...and read the details carefully.
I have written some code, logic is
1)from... (4 Replies)
Hi All,
My program flow is as below
Windows batch -- > Cygwin batch --> zsh script
There are multiple Cygwin batch scripts that are called from Windows batch file . But when i am executing the first cygwin batch script the control goes to the zsh file and executes and stoping from... (1 Reply)
Hello All,
I have a UNIX script which will prepare anonymous oracle pl/sql block in a temporary file in run time and passes this file to sqlplus as given below.
cat > $v_Input_File 2>>$v_Log << EOF
BEGIN
EXECUTE IMMEDIATE 'ALTER SESSION FORCE PARALLEL DML PARALLEL 16';
EXECUTE... (1 Reply)
Hello All,
I have exactly same issue @vikas_trl had in following link:
https://www.unix.com/shell-programming-and-scripting/259854-control-not-returning-sqlplus-calling-unix-shell-script.html
I wonder if he or somebody else could find the issue's cause or the solution.
Any help would... (4 Replies)
Discussion started by: RicardoQ
4 Replies
LEARN ABOUT DEBIAN
set_progname
ERRORMSG(3pub)ERRORMSG(3pub)NAME
errormsg, set_progname, get_progname - printing error messages
SYNOPSIS
#include <errormsg.h>
void errormsg(int exitp, int eno, const char *fmt, ...);
void set_progname(const char *argv0, const char *def);
const char *get_progname(void);
DESCRIPTION
The errormsg function is used for printing error messages. It is a like a combination of fprintf(3) and perror(3), in that it makes it
easy to add arbitrary, printf-like formatted text to the output, and makes it easy to include the system's error message (the error string
corresponding to the eno parameter). Unlike perror, this function does not get the error code directly from errno, thus making it easier
to do something else that might set it before printing out the error message. errormsg also adds the name of the program to the output, if
known.
The first argument to errormsg should be 0 (don't exit program), 1 (exit program with exit(EXIT_FAILURE)) or 2 (with abort()). The second
one should be 0 (don't print system error message), positive (print error message corresponding to the error code), or -1 (print the error
message corresponding to errno).
The set_progname function sets the program name. You need to call this function with at least one non-NULL parameter to get the program
names included in the output. If either argument is non-NULL, it should point at strings that have static duration, i.e. they exist until
the program terminates (or at least until the last error message has been printed); this is so that it is not necessary to create a copy of
the name. (Either or both arguments can also be NULL.)
If the first argument is non-NULL, that is used as the name, otherwise the seconds argument is used. If both are NULL, no program name is
included in the output. The reason for having two arguments is so that the caller doesn't have to do the test, and can just call
set_progname(argv[0], "default_name");
(it is valid for argv[0] to be NULL, under ISO C).
The get_progname function returns a pointer to the current name of the program, as set by set_progname. If get_progname returns NULL, then
no name has been set and none is included in the output. This function is included for completeness, it is not really expected to be use-
ful.
SEE ALSO publib(3)AUTHOR
Lars Wirzenius (lars.wirzenius@helsinki.fi)
ERRORMSG(3pub)